Device for attaching a tablet computer

ABSTRACT

A device for attaching a tablet computer to the rear-side of a motor vehicle seat has a support ( 5, 50, 50′, 50″, 59, 150 ) for receiving the tablet computer ( 6, 60 ). The support ( 5, 50, 50′, 50″, 59, 150 ) can be moved between a first position in which the screen ( 6   a,    60   a,    60   a   ′, 60   a   ″, 160   a ) of the tablet computer ( 6, 60 ) is arranged on the side opposite the vehicle seat part ( 1   a,    1   b   , 1   c   , 1   c   ′, 1   c   ″, 10   a,    10   a   ′, 10   b,    10   c ) and aligned essentially vertically and a second user position in which the screen ( 6   a   , 60   a,    60   a   ′, 60   a   ″, 160   a ) is oriented upwards and essentially horizontally or oblique.

This application is the national stage of PCT/2011/054758 and alsoclaims Paris convention priority of DE 10 2010 006 261.8 filed Jan. 28,2010, DE 10 2010 020 082.4 filed May 10, 2010, DE 10 2010 021 372.1filed May 25, 2010, DE 10 2010 024 095.8 filed Jun. 17, 2010, DE 10 2010026 941.7 filed Jul. 12, 2010 and of PCT/EP2011/000393 filed Jan. 28,2011 the entire disclosures of which are hereby incorporated byreference.

BACKGROUND OF THE INVENTION

The invention concerns a device for attaching a tablet computer, inparticular, to the rear side of a motor vehicle seat part such as a backrest, head rest or head rest mounting of a vehicle seat.

In contrast to a notebook computer comprising a keypad and a screenblock, which are connected via a joint, a tablet computer consists ofone single block with integrated flat screen, on which the entries aremade via automatically displayed keyboards or with an electronic stylus.The length and width of the block approximately correspond to thedimensions of the 9.7 inch screen and the thickness is slightly morethan 1 cm, such that tablet computers are very light-weight, portabledevices which are particularly suited for use while travelling.

Despite the very compact design, tablet computers combine a plurality ofpassive and interactive functions and can therefore be used in animmense variety of ways. The user can e.g. read books and newspapers,listen to music, watch TV programs and video clips, study GPS-basedmaps, surf on the Internet, send and receive e-mails, communicate viablogs and web forums, play computer games, and also edit photos anddocuments.

Tablet computers have their own current source and the data istransmitted via radio communication such that neither a power connectionnor a connection for data transmission are required for operation. Atthe most, a power supply must be provided for charging the batteries ofthe device or in case of a very long period of use.

For all these reasons, tablet computers are also particularly suited foruse in vehicles. In particular, during long car trips, the passengers inthe backseats wish to watch films, information programs and the news onthe Internet or on TV, correspond via e-mail, listen to music orentertain themselves with video games. In particular, for passive use,e.g. for watching films and information programs, it is ideal for thetablet computer to be positioned on the rear side of a front seatapproximately at the height of the head rest and for the screen ortablet computer to be aligned approximately in a vertical position tothe eye level of the viewer. It is also desirable for the screen ortablet computer to be optimally finely adjusted to the respective userin this passive position of use both in height and also with respect tothe angle of inclination.

The position of use of the screen or tablet computer in the passive modeof viewing is, however, unfavorable for interactive use, in particularfor making entries via the displayed keyboards. For this purpose, thetablet computer should rather be oriented with the screen facing upwardsapproximately at table height in a horizontal position or advantageouslyin a position inclined with respect to the user such that operation ispossible in a relaxed position to prevent the user from twisting his/herwrists and fatiguing his/her arms.

In this interactive position of use, it is also desirable for the screenor tablet computer to allow optimized fine adjustment to the respectiveuser both in height and angle of inclination.

Most of the screens have a rectangular shape and are used either in anupright format or a transverse format in dependence on the contents. Forthis reason, the tablet computer should be rotatable between an uprightand a transverse format both in the passive position of use and also inthe interactive position of use.

It is also important for the tablet computer to be stably fixed in thepositions of use in order to prevent it from changing its position dueto shocks, vibrations or acceleration of the vehicle.

Due to their versatility and dependence on an individual person, tabletcomputers are mainly only temporarily used in a vehicle, like mobilephones, such that mounting and removing thereof to and from the devicethat is attached to the vehicle should be realized with minimum expensewhen getting into and out of the vehicle.

The device with and without tablet computer must moreover not endangerthe safety of the passengers or limit their freedom of movement andshould be quickly and easily mounted to or removed from the vehicle seatin case it is not used.

In another advantageous fashion, the device is not only used in vehiclesbut also otherwise, e.g. at home or in the office.

It is the underlying purpose of the invention to produce a device formounting a tablet computer, in particular, to the rear side of a vehicleseat, which enables use of the tablet computer with maximum versatility.

The tablet computer should also be individually adjustable to the userswith respect to height and angle of inclination in both positions ofuse, be stably fixed, and be rotatable between an upright format and atransverse format.

The tablet computer should moreover also be insertable into andremovable from the device in a simple and rapid fashion.

The device should moreover also enable easy and rapid mounting to andremoval from the vehicle seat and be used elsewhere, e.g. at home or inthe office.

The device with and without tablet computer should also not representany danger for the vehicle passengers.

SUMMARY OF THE INVENTION

In accordance with the invention, these objects are achieved by a devicefor mounting a tablet computer to the rear side of a vehicle seat part,such as a back rest, head rest or head rest mounting of a vehicle seatcomprising the features of the independent claim. Advantageous furtherdevelopments of the invention are defined in the dependent claims.

The device comprises a fastening device for mounting the device to thevehicle seat part and a carrier element which is movably connected tothe fastening device and to which a holder is movably connected forreceiving the tablet computer, wherein the holder can be moved between afirst position of use, in which the screen of the tablet computer isoriented in an approximately vertical direction facing away from thevehicle seat part, and a second position of use, in which the screen ofthe tablet computer is preferably oriented in an upward direction andapproximately horizontally or at an inclination with respect to theuser.

In the first position of use, the holder is advantageously positioned ateye level of the viewers. In another preferred variant, in the firstposition of use, the angle of inclination of the holder can be adjustedto the viewing angle of the users.

In the second position of use, the holder is adjustable between anapproximately horizontal and an approximately vertical position. Aninclined position with an inclination of approximately 30° to 60° belowthe horizontal is preferred.

The holder is preferably positioned in the first position of usesubstantially above the fastening device and in the second position ofuse substantially below the fastening device.

In another preferred variant, the holder can also be fixed and used inpositions between the first and the second position of use.

A transfer configuration is advantageously provided for displacing theholder from the first to the second position of use and vice versa,which may be designed in different ways, wherein the screen can bealigned to the user in both positions of use.

The transfer configuration thereby comprises a carrier element designedas an arm, which is connected to the fastening device via a first jointand to the holder via a second joint, wherein the two joints rotateabout axes that extend parallel with respect to each other andperpendicularly to the rear wall of the holder.

In a preferred further development of this embodiment, an additionalpivot bearing is arranged between the first joint and the fasteningdevice, the axis of rotation of which extends in a horizontal directionand parallel to the rear wall of the holder. The movement of the holderbetween the first and the second positions of use is therefore performedin one plane, the inclination of which is realized through pivoting ofthe carrier element about the pivot bearing.

The carrier element may be designed to be rigid or in two partsaccording to the principle of a telescopic slide guidance such that theseparation between the joints can be variably adjusted.

The joints and pivot bearings are advantageously held in therespectively adjusted positions through friction or positive fit.Manually detachable locking devices are also preferred, which have aspring-loaded locking bolt and can be unlocked with a release button.

In a further preferred embodiment, ball joints may also be used insteadof pivot joints. Combinations of pivot joints and ball joints are alsofeasible.

Moveable components such as joints and linear guides preferably have anassociated locking mechanism for mutual locking thereof. The lockingmechanism has an associated element for releasing the locking action.

A further preferred embodiment of the device comprises stops thatdelimit the angle of inclination of the holder with respect to the userat least in the two positions of use in order to prevent the passengersfrom being exposed to danger in case of accidents.

The combination of individual features of the described embodiments alsoproduces advantageous embodiments of the transfer configuration.

In a preferred embodiment, the holder can be rotated through at least90° between an upright format and a transverse format in the positionsof use. In a particularly advantageous fashion, the holder can berotated through 360°, with four locking positions of 90° each.

Towards this end, a pivot joint is advantageously provided between thecarrier element and the holder, the axis of rotation of which extendsperpendicularly to the broad side of the holder such that theadvantageously rectangular holder can be rotated between an uprightformat position and a transverse format position. The pivot joint isadvantageously arranged in the point of intersection of the diagonal ofthe broad side of the holder such that the holder remains centered withrespect to the vehicle seat or its mounting position both in the uprightposition and in the transverse position.

Locking devices are preferably provided, which fix the holder in avertical position for inserting and removing the tablet computerinto/from the top and in the two horizontal positions, which mayadditionally comprise stops for delimiting the rotary movement. It is,however, also feasible to provide four locking positions such that theholder is fixed in both vertical and horizontal positions.

The holder advantageously comprises a rectangular rear wall which isdirectly or indirectly connected to the carrier element at the rearside, e.g. via pivot or ball joints, a guide rail or a carriage, and thesize of which approximately corresponds to the dimensions of the tabletcomputer. The edges of the rear wall advantageously comprise supports,e.g. in the form of continuous or discontinuous end walls, for lateralretention of the tablet computer.

The holder may have a frame which extends parallel to the rear wall andsurrounds the screen of a tablet computer that is inserted into theholder. A corresponding opening could be provided at one of the endfaces of the holder for inserting and removing the tablet computer, orthe frame may be connected to the holder via a hinge such that it can beopened for inserting or removing the tablet computer.

In one preferred embodiment, instead of a frame, only L-shaped clampsmay be arranged on two opposite supporting walls, which surround thetablet computer on the sides of the screen and hold it down with respectto the rear wall, wherein one of the clamps should be movable to theoutside, preferably in a spring-loaded fashion, for inserting andremoving the tablet computer.

A continuous peripheral border is particularly advantageous, whichapproximately corresponds to the height of the edge of the tabletcomputer or projects past it. This border is advantageously providedwith an outward safety radius and may consist of an elastic material.

In order to increase the solidity and provide large safety radii, theedge may be designed as a double-walled U that is closed on the side ofthe screen.

In a preferred embodiment, a concave receiving pocket is arranged on oneside of the border, into which the tablet computer is disposed and issubsequently pivoted below the spring-loaded holding clamp arranged onthe opposite border.

The rear wall of the holder preferably has openings to facilitateremoval of the tablet computer from the rear of the holder followingrelease of the holding clamps.

In a preferred embodiment, a spring arrangement is provided, which liftsthe tablet computer when releasing the holding clamp to such an extentabove the border that the tablet computer can be conveniently graspedand be removed from the holder.

In another preferred embodiment, the rear wall of the holder hasrecesses such that the tablet computer can be pushed from the rear outof the holder after releasing the holding clamps.

The holder advantageously comprises a plug for transmitting currentand/or data, which, when the tablet computer is inserted, is coupled toa mating connector provided on the tablet computer.

In an alternative variant, only an opening may be provided at acorresponding location of the border of the holder, through which plugsfor current or data can be directly coupled to the tablet computer. Itwould also be feasible to similarly provide an opening for the jack plugof an earphone at a corresponding location.

In order to ensure easy and convenient operation of the push-buttonsthat only slightly project past the end faces of the tablet computerdespite a broad safety border of the holder, in one preferred embodimentof the invention, transfer buttons may be provided, which are guided inthe border of the holder and transfer the pressure via a plunger, fromthe outside to the keys arranged on the tablet computer. The transferbuttons are advantageously returned via a separate spring which isformed on the key or can be a separate part.

The fastening device may be rigidly or movably connected to the vehicleseat part or be later mounted to a vehicle seat part by the user of thevehicle.

The inventive device is suited both for installation in a receivingspace arranged on the rear side of a back rest or a head rest, and alsofor mounting to a corresponding fastening device which is provided orcan be mounted to a back rest, a head rest or a head rest mounting.

In a preferred embodiment, a fastening device is provided for mountingthe device to the columns of a head rest. This enables laterinstallation into almost any vehicle without requiring any structuralprovisions on the part of the vehicle manufacturer.

The device is advantageously connected via a detachable coupling to thevehicle seat part and can be mounted to and removed from it in a simpleand rapid fashion depending on the requirements. It is therebyadvantageous for the device to be foldable into a compact shape forstorage.

In accordance with a preferred embodiment, the coupling comprises alocating bushing into which a connector element, which can be folded outfrom the carrier element, can be inserted and locked.

The device also advantageously abuts the vehicle seat part as flatly aspossible and minimally limits or obstructs the freedom of movement ofthe passengers.

In a preferred embodiment, the device may be installed in a receptacleformed on the rear side of the back rest or a head rest such that thedevice is accommodated in the first position of use substantially in thebody of the vehicle seat part, and the screen of the tablet computer isapproximately aligned with the outer side of the vehicle seat part.

For rotating the holder or the tablet computer between an upright formatand a transverse format and/or for inserting and removing the tabletcomputer and for moving the holder or the tablet computer into thesecond position of use, the device or the holder may be moved to acorrespondingly large extent out of the receptacle. This could berealized e.g. through extension with a linear guidance, a pivot joint ora telescopic axis of rotation.

The head rest columns, via which the head rest is connected to the backrest of the vehicle seat, are particularly suited for later assembly. Ina preferred embodiment, a clamping element may be clamped between thetwo head rest columns, to which the device is rigidly or detachablyconnected.

The device is preferably fastened via a detachable coupling to alocating bushing disposed on the clamping element and to a connectorelement that is inserted into the locating bushing and can be lockedwith a locking device. In this embodiment, the first joint isadvantageously arranged on the connector element.

In a further preferred embodiment variant, the device has a secondfastening device which also enables use of the device outside ofvehicles, for example at home or in the office. The second fasteningdevice is advantageously designed for use of the device on a table area,and comprises an identical locating bushing for the connector elementarranged on the device, such as the fastening device in the vehicle,such that the device can be coupled to the two fastening devices in thesame fashion and be used both in the vehicle and at home or in theoffice.

A second fastening device of this type is advantageously provided with asuction holder with round rubber pad, with which the fastening devicecan be mounted by generating a vacuum on a table area or on a wall or awindow pane.

In one preferred embodiment, a second fastening device of this typecomprises a round base in which the suction holder and an eccentriclever are housed for generating the vacuum by lifting the rubber pad,and a hood that is rotatably connected to the base and houses thelocating bushing. This enables additional rotational movement of thedevice of 360° about an axis of rotation that is aligned perpendicularlyto the fastening plane.

In a further embodiment, a mounting foot of a preferably elasticmaterial is provided, which can be mounted to the connector element ofthe device such that the device can also be set up on a flat baseoutside of vehicles in a non-displaceable fashion. The mounting footpreferably has a T-shape and has lateral supports such that the deviceis stably supported in an upright format and in a transverse format ofthe holder.

Further advantages and designs of the invention can be extracted fromthe description and the attached drawings.

It is clear that the features mentioned above and below can be used notonly in the respectively stated combination but also in othercombinations or individually without departing from the scope of thepresent invention.

The invention is described below by means of preferred embodiments withreference to the attached drawing.

BRIEF DESCRIPTION OF THE DRAWING

FIG. 1 shows a perspective view of a first variant of the device,mounted to a head rest mounting, in the first position of use withouttablet computer and in a transverse format;

FIG. 2 shows a perspective view of the device in accordance with FIG. 1during insertion of the tablet computer into the holder;

FIG. 3 shows a perspective view of the device in accordance with FIG. 1with the tablet computer being inserted into the holder;

FIG. 4 shows a perspective view of the device in accordance with FIG. 3in the second position of use;

FIG. 5 shows a perspective view of the device in accordance with FIG. 3with the tablet computer in the first position of use in an uprightformat;

FIG. 6 shows a schematic side view of the device in accordance withFIGS. 1 through 5 in the two positions of use and in an intermediateposition;

FIG. 7 shows a schematic side view of a second variant of the device inthe two positions of use and in an intermediate position;

FIG. 8 shows a perspective view from the front of the second variant ofthe device in accordance with FIG. 7 with the holder without tabletcomputer in an upright format;

FIG. 9 shows a perspective view from the rear of the device inaccordance with FIG. 8 with separate assembly consisting of carrierelement with guide rail and carriage with folded-out connector element;

FIG. 10 shows a perspective view of the device according to FIG. 9 inthe assembled state with the carriage with extended connector element inthe lowermost position;

FIG. 11 shows a perspective view of the device in accordance with FIG.10 with the carriage and folded-out connector element in the uppermostposition;

FIG. 12 shows a perspective view of the device according to FIGS. 10 and11 with the carriage with folded-out connector element in the centerposition and the holder in a transverse format;

FIG. 13 shows a perspective view of the device according to FIG. 10 withfolded-in connector element in the storage position;

FIG. 14 shows a longitudinal section through the device in accordancewith FIG. 11 with the tablet computer being inserted into the holder;

FIG. 15 shows a partially cut-free detailed view of the carriageguidance in the carrier element of the device according to FIG. 14;

FIG. 16 shows a perspective exploded view of the device in accordancewith FIGS. 8 through 15;

FIG. 17 shows a partially cut side view of an inventive device in thefirst position of use;

FIG. 18 shows the device in accordance with FIG. 17 in a partially cutview from the rear in both positions of use;

FIG. 19 shows a perspective view of the device according to FIG. 17 fromthe rear;

FIG. 20 shows a partially sectional side view of a fourth variant of theinventive device in the storage position;

FIG. 21 shows the device according to FIG. 20 in the first position ofuse;

FIG. 22 shows the device according to FIGS. 20 and 21 in the secondposition of use;

FIG. 23 shows an exploded view of a modified embodiment of the thirdvariant of the inventive device in accordance with FIGS. 17 through 19with inserted tablet computer;

FIG. 24 shows a perspective view of the holder of the device inaccordance with FIG. 23 with inserted tablet computer;

FIG. 25 shows a partially cut-free cross-section of the device inaccordance with FIGS. 23 and 24 with inserted tablet computer;

FIG. 26 shows a partially cut-free longitudinal section of the device inaccordance with FIGS. 23 through 25 with inserted tablet computer;

FIG. 27 shows a side view of the device in accordance with FIGS. 23through 26 with inserted tablet computer and folded-in connectorelement;

FIG. 28 shows a side view of the device mounted to a head rest mountingin accordance with FIGS. 23 through 27 with inserted tablet computer inthe first position of use;

FIG. 29 shows the device according to FIG. 28 in the second position ofuse;

FIG. 30 shows a longitudinal section from the front of a firstalternative locking device of the lower joint of the device inaccordance with FIGS. 23 through 29;

FIG. 31 shows a longitudinal section from the side of a secondalternative locking device of the lower joint of the device inaccordance with FIGS. 23 through 29;

FIG. 32 shows a longitudinal section from the front of a modifiedembodiment of the locking device in accordance with FIG. 30;

FIG. 33 shows a longitudinal section from the side of the locking devicein accordance with FIG. 32;

FIG. 34 shows a section of the holder with the holding clamp inaccordance with FIG. 24 and an ejector spring for the tablet computer;

FIG. 35 shows an alternative design of the carrier element in accordancewith FIGS. 23 through 29 in a first position;

FIG. 36 shows the carrier element in accordance with FIG. 35 in a secondposition;

FIG. 37 shows a perspective view of the device with a fastening devicefor use of the device outside of vehicles in the non-coupled state;

FIG. 38 shows a front view of the device in accordance with FIG. 37 inthe coupled state with the holder in the first position of use;

FIG. 39 shows a side view of the device according to FIG. 38;

FIG. 40 shows a front view of the device according to FIG. 38 with theholder being inclined towards the fastening device;

FIG. 41 shows a side view of the device according to FIG. 40;

FIG. 42 shows a side view of the device according to FIG. 41 with theholder being horizontally supported on the fastening device;

FIG. 43 shows a front view of the device according to FIG. 42;

FIG. 44 shows a side view of the device according to FIGS. 38 through 43with the holder in the second position of use;

FIG. 45 shows a longitudinal section through a further fastening devicefor use of the device outside of vehicles with released suction holder;

FIG. 46 shows a perspective view of the fastening device according toFIG. 45 at an angle from the front;

FIG. 47 shows a perspective view of the fastening device according toFIG. 45 at an angle from the rear;

FIG. 48 shows a section of the border of the holder with a transferbutton from the rear side;

FIG. 49 shows a cross-section of the view in accordance with FIG. 48with a tablet computer that is inserted into the holder;

FIG. 50 shows an exploded view of the assemblies: holder, carrierelement and intermediate piece with connector element of a modifiedembodiment of the third variant of the inventive device according toFIGS. 17 through 19 and 23 through 29 from the front.

FIG. 51 shows an exploded view of the assemblies: holder, carrierelement and intermediate piece with connector element in accordance withFIG. 50 from the rear;

FIG. 52 shows a partially cut-free perspective view of the assembly:intermediate piece with connector element in accordance with FIGS. 50and 51;

FIG. 53 shows a schematic view of the preferred positions of use of theholder with respect to the position of the connector element or of thefirst joint;

FIG. 54 shows a perspective view of a mounting foot for use of thedevice outside of vehicles;

FIG. 55 shows a perspective view of the mounting foot in accordance withFIG. 54 on the connector element;

FIG. 56 shows a perspective view of the device with mounting foot on thefolded-out connector element in accordance with FIG. 55 and the holderin a transverse format position.

DESCRIPTION OF THE PREFERRED EMBODIMENT

FIGS. 1 through 6 show a first variant of the device with a firstembodiment of the transfer configuration. The height-adjustable headrest 1 b with head rest columns 1 c′, 1 c″ is mounted to the back rest 1a of the vehicle seat 1. A spring-loaded clamping element 2 a isinserted between the head rest columns 1 c′, 1 c″. A locating bushing 3a is arranged in the center of the clamping element 2 a, into which aconnector element 3 b is inserted and locked in the locating bushing 3 aby a locking device 3 c that can be released via lateral buttons.

A first joint 7 is arranged at the rear end of the connector element 3b, to which joint one end of a carrier element 4 is hinged. At the otherend of the carrier element 4, a rear wall 5 c of a holder 5 is connectedvia a second joint 8 to the carrier element 4. The axes of the firstjoint 7 and the second joint 8 extend parallel to the rear broad side ofthe back rest 1 a or the head rest 1 b.

A pivot joint 5 a is arranged between the second joint 8 and the rearwall 5 c of the holder 5, the axis of rotation 5 b of which extendsperpendicularly to the broad side of the rear wall 5 c. The pivot joint5 a is arranged in the point of intersection of the diagonals of therear wall 5 c, such that the holder 5 can be rotated between an uprightformat and a transverse format and maintains central alignment withrespect to the vehicle seat 1. Release of the device is thereby notrequired.

The first joint 7 and the second joint 8 are designed as friction hingessuch that the respective settings of the carrier element 4 and of theholder 5 are maintained.

FIG. 6 schematically shows the device in three different positions. Thefirst view shows the holder 5 in the first position of use. The view inthe middle shows an intermediate position of the holder 5 and the lastview shows the holder 5 in the second position of use.

FIG. 1 shows the structure of the holder 5. The supports 5 d″ and 5 d″″in the form of side walls, which are arranged at right angles, aremounted to the two short front edges of the rectangular rear wall 5 c.At the long lower front edge (FIGS. 1 and 2), the support 5 d′ isdesigned as an L-shaped side wall and forms together with the supports 5d″ and 5 d″″ a pocket into which the tablet computer 6 is put duringinsertion into the holder 5 and can then be pivoted towards the rearwall 5 c. The supports 5 d″, 5 d″″ thereby laterally center the tabletcomputer 6 such that, during insertion into the holder 5, the connector5 f that is arranged in the center on the inner side of the support 5 d′for transmitting current and/or data is coupled to the mating connectorarranged on the tablet computer 6.

The clamp-shaped support 5 d′″ is arranged at the front edge of the rearwall 5 c opposite to the support 5 d′, is pressed by a spring (notillustrated) against the tablet computer 6, and can be drawn past theedge of the rear wall 5 c for pivoting the tablet computer 6.

FIG. 7 shows a second variant of the with a second embodiment of thetransfer configuration, in which the carrier element 4 comprises acarriage 4 a connected to the first joint 7, which forms a linearguidance together with a guide rail 5 g arranged on the holder 5, thelinear guidance displacing the holder 5 relative to the first joint 7.The first view shows the holder 5 in the first position of use. Thecenter view shows an intermediate position of the holder 5 and the lastview shows the holder 5 in the second position of use.

The first joint 7 is also designed as a friction hinge in this secondvariant such that the respective setting of the holder is maintained. Apivot joint 5 a is also arranged between the carrier element 4 and therear wall 5 c of the holder 5, the axis of rotation 5 b of which extendsperpendicularly to the broad side of the rear wall 5 c (FIG. 5).

FIGS. 8 through 16 show detailed views of the second variant of thedevice in accordance with FIG. 7. The joint bearing 45 b of the carriage45 is connected via the joint 70 to the connector element 30 b. Thecarrier element 40′ comprises a guide rail 40 a in which the slidingplate 45 a of the carriage 45 is movably and linearly guided, whereinthe displacement path is limited by the end stops 40 a″ (FIGS. 10 and11).

Locking recesses 40 h are arranged on the inner sides of the two sidewalls of the guide rail 40 a, into which locking cams 45 f engage, whichare laterally connected to the sliding plate 45 a via spring elements 45e and retain the carriage 45 with positive fit. During displacement ofthe carriage, the spring-loaded locking cams 45 f act between thelocking recesses 40 h as brakes by means of frictional locking (FIGS. 14and 15).

The first bearing seat 40 c is arranged in the center of the guide rail40 a and forms together with the second bearing seat 50 k, which isarranged in the center on the rear wall 50 a of the holder 50, the pivotjoint 5 a that rotates about the axis of rotation 5 b. The two bearingseats 40 c, 50 k, and thereby the carrier element 40 and the holder 50,are held together by the connecting pin 50 n that is snapped with theconnecting sleeve 40 g. The pivot joint 40 c, 50 k, 40 g, 50 n iscovered by the joint cover 40 b which is concentrically mounted to theguide rail 40 a and laterally projects past the guide rail 40 a andstably supports the holder 50 and the carrier element 40 with respect toone another during rotation of the holder 50. An arc-segment shaped stop40 d is arranged concentrically with respect to the first bearing seat40 c and an arc-segment shaped counter stop 501 is arrangedconcentrically with respect to the second bearing seat 50 k, the arclengths of which correspond to a central angle of 90° and which areopposite to each other when the holder 50 and the carrier element 40 arevertically aligned such that the holder 50 can be rotated with respectto the carrier element 40 from the vertical position to both sidesthrough 90° to each side.

A receiving sleeve 40 e is disposed vertically above the axis ofrotation 5 b on the side of the guide rail 40 a facing the holder 50,into which a spring-loaded ball catch 40 f is inserted. On the side ofthe rear wall 50 a facing the carrier element 40, three hollows 50 p′,50 p″, 50 p′″ are mounted into which the ball catch 40 f locks in thevertical and both horizontal positions of rotation of the holder 50 andfixes the holder in the respective positions.

The length of the guide rail 40 a corresponds to the height of therectangular holder 50 in its vertical position in the upright format.When the holder is pivoted into the horizontal position to a transverseformat, the guide rail 40 a symmetrically projects past the holder 50 atthe top and bottom (FIG. 12).

The pivoting angle of the guide rail 40 a about the first joint 70 isdelimited by the two stops 45 c, 45 d on the carriage 45. The first stop45 c is used to delimit the inclination of the holder 50 or of thetablet computer 60 with respect to the user in the first position ofuse, whereas the inclination of the holder 50 or tablet computer withrespect to the user in the second position of use is delimited by thesecond stop 45 d on the sliding plate 45 a (FIG. 14). In both positionsof use, the holder 50 can freely move away from the user towards thevehicle seat part 10 a, 10 b.

The connector element 30 b can be stored using little space by pivotingit around the first joint 70 into the guide rail 40 a (FIG. 13).

Upper 50 d, 50 d′, 50 d″ and lower 50 c, 50 c′, 50 c″ supports for thetablet computer 60 are arranged on the rear wall of the holder 50 at theopposite narrow end faces. The lower supports 50 c, 50 c′, 50 c″ formtogether a concave receptacle 50 b into which the tablet computer isinserted at an inclination from the front and is then pivoted below theupper supports 50 d, 50 d′, 50 d″.

A recess 50 m for the L-shaped holding clamp 50 g is provided in thecenter of the upper support 50 d, which can be guided with the guidingleg 50 g in clamp guidances 50 o′, 50 o″ on the rear wall 50 a and canbe displaced parallel thereto. An opening 50 h is provided in the centerof the clamp leg 50 g′, which accommodates a tension spring 50 i whichis mounted to the spring suspensions 50 h′ 50 h″ and pretensions theholding clamp against the end face of the tablet computer 60 that isinserted into the holder 50.

An inlet slope 50 g″ is provided at the front edge of the holding clampsuch that the holding clamp 50 g is forced in an upward direction duringpivoting of the tablet computer and subsequently extends over the frontside of the tablet computer.

In the corner areas, the tablet computer is laterally held by thesupports 50 c′, 50 c″, 50 d′, 50 d″. The side walls 50 e′, 50 e″ of theholder have no supporting function and are below the end faces of thetablet computer 60 which remains freely accessible from the side.

Cut-outs 50 f′, 50 f″, 50 f′″ are provided on the upper 50 d and lower50 b, 50 c supports, which ensure accessibility to the control elementsof the tablet computer.

FIGS. 17 to 19 show a third variant of the inventive device with a thirdembodiment of the transfer configuration. The carrier element 40′ isconnected via a lower joint 71, 71′ to the connector element 30 b′ andvia an upper joint 40 c′, 50 k′ to the holder 50′, wherein the axes ofrotation 5 b, 5 b′ of the two joints 71, 71′, 40 c′, 50 k′ extendperpendicularly to the rear wall 50 a′ of the holder 50′ and parallel toeach other. The movement of the holder 50′ between the first and thesecond position of use is therefore performed in one plane, theinclination of which is realized through pivoting the carrier element40′ about the first joint 70′.

In the first position of use of the holder 50′, the longitudinal axis ofthe carrier element 40′ extends from the lower joint 71, 71′ in avertical upward direction and the upper joint 40 c′, 50 k′ is locatedperpendicularly above the lower joint 71, 71′ (FIG. 18).

In the second position of use (dashed lines) of the holder 50′, thelongitudinal axis of the carrier element 40′ extends from the lowerjoint 71, 71′ in a vertical downward direction and the upper joint 40c′, 50 k′ is located perpendicularly below the lower joint 71, 71′ (FIG.18).

The first and the second positions of use of the holder 50′ or tabletcomputer 60 are defined by two corresponding stops or locking positions(not shown) on the lower joint 71, 71′, and the positions of rotation ofthe holder or tablet computer 60 in the upright and transverse formatsare defined by four corresponding stops or locking positions (not shown)at the upper joint 40 c′, 50 k′, whereas the inclination of the holderor tablet computer is adjusted at the first joint 70′.

FIGS. 20 to 22 show a fourth variant of the device with a fourthembodiment of the transfer configuration. A receiving space 10 d isformed in a vehicle seat part 10 a, the bottom wall 10 d′ of which has afastening device 20 to which the carrier element 40″ is connected at itslower end via the first joint 70″. A connector element may alternativelyalso be connected to the lower end of the carrier element 40″, which canbe inserted into a corresponding receptacle provided on the bottom wall.

The upper end of the carrier element 40″ is connected to the carriage45′ via the second joint 80. The axes of rotation of the first andsecond joints 70″, 80 extend horizontally and parallel to the rear wall50 a″ of the holder 50″.

The carriage 45′ is guided in the guide rail 40 a′ such that it can bedisplaced in a longitudinal direction, and the guide rail 40 a′ isconnected to the holder 50″ via the pivot joint 40 c″, 50 k″.

FIG. 20 shows the storage position of the device. The carrier element40″, the guide rail 40 a′ and the holder 50″ are disposed verticallyaligned one after the other in the receiving space 10 d and are disposedon top of each other in mutually parallel planes. When a tablet computeris inserted into the holder 50″, its screen 60 a′ is approximatelyaligned with the outer wall 10 d″ of the vehicle seat part 10 a and canbe used, however, only for one format.

FIG. 21 shows the holder 50″ in the first position of use in which thetablet computer can be inserted into or be removed from the holder 50″and the holder 50″ can be turned about the axis of rotation 5 b betweenan upright format and a transverse format.

The distance between the screen 60 a′ and the user can also beindividually adjusted through movement of the holder 50″ by changing theangle of the carrier element 40″, the setting of the height of thescreen 60 a′ can be individually adjusted through displacement of thecarriage 45′ on the guide rail 40 a′, and the angle of inclination ofthe screen 60 a′ can be individually adjusted through pivoting thecarriage 45′ about the second joint 80.

FIG. 22 shows the holder 50″ in the second position of use. The carrierelement 40″ is horizontally supported on the bottom wall 10 d′, whichforms a stable stop, and the guide rail 40 a′ with holder 50″ isdisplaced to the lowermost position on the carriage 45′ and inclinedtowards the user.

FIGS. 23 through 29 show a modified embodiment of the third variant ofthe inventive device illustrated in FIGS. 17 through 19 with a thirdform of a transfer configuration.

An intermediate piece 90 is articulated to the connector element 30 b′via the first joint 70′ which pivots about the axis of rotation 5 b″.The joint head 71, the axis of rotation 5 b′ of which extends at rightangles to the axis of rotation 5 b″, is arranged on the intermediatepiece 90 and forms together with the bearing seat 71′, formed at one endof the carrier element 40′, the lower joint 71, 71′. The joint head 71and the bearing seat 71′ are held together by means of the connectingpin 50 n″ which is connected to the intermediate piece 90.

The bearing seat 40 c′ is formed at the other end of the carrier element40′, and forms, together with the joint head 50 k′ which is disposed inthe center of the rear wall 50 a′ of the holder 50′, the upper joint 40c′, 50 k′, the axis of rotation 5 b of which extends parallel to theaxis of rotation 5 b′ of the lower joint 71, 71′. The upper joint 40 c′,50 k′ is held together with the connecting pin 50 n′ which is connectedto the connecting sleeve 40 g′.

The upper locking cam 41 and the lower locking cam 42 are disposed inthe carrier element 40′ between the upper joint 40 c′, 50 k′ and thelower joint 71, 71′ such that they can be linearly displaced (FIG. 26,FIGS. 32/33), and are radially pretensioned against the axis of rotation5 b of the upper joint 40 c′, 50 k′, respectively 5 b′ of the lowerjoint 71, 71′ by means of the pressure springs 43.

Four upper locking recesses 41′, 41″, 41′″, 41″″ are provided on theouter side of the joint head 50 k′, into which the upper locking cam 41engages and retains the holder 50′ in the two upright format positionsand in the two transverse format positions.

Two lower locking recesses 42′, 42″ are provided opposite to each otheron the outer side of the joint head 71, into which the lower locking cam42 engages and fixes the carrier element 40′ in the two verticalpositions in an upward and a downward direction.

The tablet computer 60 is held in the holder 50′ by the concavereceptacle 50 b′, which is disposed on a narrow side of the holder 50′,and the holding clamp 51 g, 51 g′, which is disposed on the oppositenarrow side of the holder 50′, is guided in clamp guidances 51 o′, 51 o″on the rear wall 50 a′, and is pretensioned by the tension spring 50 i′against the tablet computer 60 in accordance with the principleexplained above.

All four end faces of the tablet computer are covered by a border 51which is disposed on the holder, is provided on its outer side with asafety radius, and is made from an elastic material such as e.g.silicone rubber.

A first stop 45 c′ is provided on the intermediate piece 90, whichdelimits the angle of inclination of the holder 50′ with respect to theuser in the first position of use when it impacts the housing of theconnector element 30 b′, and the projection of the carrier element 40′past the lower joint 71, 71′ forms a second stop 45′″ which delimits theangle of inclination of the holder 50′ with respect to the user in thesecond position of use when it impacts the housing of the connectorelement 30 b′.

The connector element 30 b′ can be folded parallel to the carrierelement 40′ to store it in a space-saving fashion (FIG. 27).

FIG. 30 shows a first alternative locking device for the lower joint 71,71′. The joint head 71 is surrounded by a frame-shaped button element 44which is disposed in the carrier element 40′ and can be moved parallelto its longitudinal axis. On the side facing the end face 40 k of thecarrier element 40′, the button element 44 has an actuator 44′ whichprojects to the outside through a corresponding opening in the end face40 k.

On the side facing the upper joint 40 c′, 50 k′, the button element 44is provided with a lower locking cam 42 which radially faces the jointhead and is held in engagement with the lower locking recesses 42′, 42″disposed on the outer side of the joint head 71. By exerting pressureonto the actuator 44′, the locking device can be released and thecarrier element 40′ can be rotated into the other position of use.

FIG. 31 shows a second alternative locking device for the lower joint71, 71′. The button element 44 is supported in the carrier element 40′concentrically with respect to the axis of rotation 5 b′ of the lowerjoint 71, 71′ and can be moved parallel to the axis of rotation 5 b′.The button element 44 is provided with an actuator 44′ on the sidefacing the outer broad side 44 i of the carrier element 40′, whichprojects in an outward direction through a corresponding opening in thebroad side 44 i.

The button element 44 surrounds the joint head 71 and is forced to theoutside by the spring 43′, thereby holding the two locking cams 44″ inengagement with the two locking recesses 42′, 42″. By exerting pressureonto the actuator 44′, the locking device can be released and thecarrier element 40′ can be rotated into the other position of use.

FIGS. 32 and 33 show a modified embodiment of the locking device for thelower joint 71, 71′ in accordance with FIG. 30. The joint head 71 issurrounded by a frame-shaped button element 44, which approximatelyextends over half the length of the carrier element 40′ and is guidedtherein such that it can be displaced in a longitudinal direction. Onthe side facing the end face 40 k of the carrier element 40′, the buttonelement 44 has an actuator 44′ which projects to the outside through acorresponding opening in the end face 40 k of the carrier element 40′.

An elongated hole 44″ that is adjusted to the diameter of the joint head71 is formed in the area of the lower joint 71, 71′ in the buttonelement 44, on the side of which facing the upper joint 40 c′, 50 k′ alower locking cam 42 is disposed, which radially faces the joint head 71and is held in engagement with the lower locking recesses 42′, 42″,which are disposed on the outer side of the joint head 71, by means ofthe spring 43′ which forces the button element 44 against the end face40 k. By exerting pressure onto the actuator 44′, the locking device canbe released and the carrier element 40′ can be rotated into therespective other position of use.

FIG. 34 shows a section of the holder 50′ in the area of the holdingclamp 51 g which can be displaced parallel to the rear wall 50 a′ and ispretensioned in the direction towards the upper joint 40 c′, 50 k′ bymeans of a tension spring 50 i′ (FIG. 26), such that it extends over atablet computer 60 inserted into the holder 50′ and secures it in theholder 50′ against falling out.

When the holding clamp 51 g has been pushed to the outside to such anextent that it no longer extends over the tablet computer 60, the tabletcomputer is moved by the ejector spring 52, which is mounted to the rearwall 50 a′, past the border 51 to such an extent that it can beconveniently grasped and removed from the holder 50′.

FIGS. 35 and 36 show an alternative embodiment of the carrier element40′, which comprises a first carrier rail 53 a and a second carrier rail53 b, 53 b′ which are connected to each other and can be moved relativeto each other in the longitudinal direction according to the principleof a telescopic slide guidance. For this reason, the separation betweenthe lower joint 71, 71′ and the upper joint 40 c′, 50 k′ or theseparation between the holder 50′ and the first joint 70′ can bevariably adjusted to the requirements of the user in both positions ofuse. A manually releasable locking device (not shown) may be providedfor fixing the respective settings.

FIGS. 37 to 44 show the device with a fastening device for use of thedevice outside of vehicles, which comprises a rectangular bottom plate55 a for setting up the fastening device on an even surface and a squarehousing 55 b which extends flush with three edges of the bottom plate 55a and is disposed on a broad side of the bottom plate. The locatingbushing 55 c is arranged in the center of the housing 55 b and itsinsertion opening 55 c′ is aligned with the inner side wall 55 b′ of thehousing 55 b.

The connector element 30 b′ is inserted into the locating bushing 55 cparallel to the bottom plate 55 a and is locked with the locking device30 c′ in the locating bushing 55 c.

The carrier element 40′ with holder 50′ can be inclined via the firstjoint 70′ through 90° between a vertical and a horizontal position andbe rotated at all angles of inclination through 360° about the lowerjoint 71, 71′. The holder 50′ can also be rotated at all angles ofinclination and positions of rotation of the carrier element 40′ through360° about the upper joint 40 c′, 50 k′ as is illustrated in FIGS. 38 to44.

FIGS. 45 to 47 show a further variant of a fastening device for mountingthe device on a flat surface with a base 56 which is formed as a hollowcylinder, is open at the lower side, and accommodates a suction devicewith a bell-shaped hood 56 c, a rubber pad 56 d arranged below the hood56 c, and a rocker arm 56 b disposed above the hood 56 c with aneccentric 56 e for retracting the rubber pad 56 d into the hood 56 c.

The rocker arm 56 b projects through a slot 56 f, which is arranged onthe lateral area 56 a of the base 56 and extends parallel to thelongitudinal axis of the base 56, and can be actuated by an actuator 56b′ from the outside between an upper position in which the rubber pad 56d is released and a lower position in which the rubber pad 56 d istensioned towards the inner side 56 c′ of the hood 56 c and generates avacuum that draws the rubber pad 56 d to the mounting surface bysuction.

The upper part 57 is disposed on the upper side of the base 56, isrotatably connected to the base 56, and accommodates the locatingbushing 57 d.

The upper part 57 has a round bottom plate 57 c which is aligned withthe lateral area 56 a of the base 56. A housing with circular segmentshaped cross-section is disposed on the bottom plate 57 c, comprising acylindrical section of the lateral area 57 a and a straight end wall 57b, where the insertion opening 57 d′ of the locating bushing 57 d isarranged. On its upper side, the upper part 57 is provided with a flatcover 57 a′.

The base 56 and the upper part 57 are connected to the connectingelement 57 e which forms the pivot bearing together with the bearingseat 57 e′ that is arranged on the upper side of the base 56. The upperpart 57 with the locating bushing 57 d can then be rotated on the base56 through 360°.

FIGS. 48 and 49 show the arrangement and guidance of the transfer button58 in the border 59 b, 59 c, 59 d of the holder 59, which is designed asa U-shaped profile which is open towards the rear side 59 a of theholder 59, conically extends to the outside, and surrounds the end facesof the tablet computer 60 like a frame.

Openings 59 b′ and 59 d′ are provided in the inner end wall 59 b and inthe outer end wall 59 d, in which openings the transfer button 58 isguided which is pretensioned in an outward direction by means of thespring 58 d.

A hollow space 59 f, which is open towards the rear side 59 a, isprovided between the inner end wall 59 b and the outer end wall 59 d,into which a stop bracket 58 c projects, which is arranged on thetransfer button 58 and secures the transfer button 58 from falling out.

In order to increase the stability of the border 59 b, 59 c, 59 d of theholder 59, transverse ribs 59 e are arranged on both sides of thetransfer button 58, which connect the inner end wall 59 b to the outerend wall 59 d.

When the tablet computer 60 has been inserted into the holder 59, theinner end face 58 b of the transfer button 58 is above the outer endface 60″ of the button 60′ of the tablet computer 60, which is activatedupon exertion of pressure onto the outer end face 58 a of the transferbutton 58.

FIGS. 50 to 52 show a further modified embodiment of the third variantof the inventive device illustrated in FIGS. 17 through 19 and FIGS. 23through 29 with the third embodiment of the transfer configuration.

FIGS. 50 and 51 show the three assemblies consisting of connectorelement 130 b with connected intermediate piece 190, carrier element 140and holder 150 from the front (FIG. 50) and from the rear (FIG. 51).

The intermediate piece 190 is connected to the connector element 130 bvia the first joint 170 that pivots about the axis of rotation 5 b″. Thejoint head 171 is arranged on the intermediate piece 190, the axis ofrotation of which 5 b′ extends perpendicularly to the axis of rotation 5b″ and which forms, together with the bearing seat 171′ arranged at thelower end of the carrier element 140, the lower joint 171, 171′. Thejoint head 171 and the bearing seat 171′ are held together by theconnecting pin 150 n″.

The bearing seat 140 c is arranged at the upper end of the carrierelement 140 and forms, together with the joint head 150 k arranged inthe center of the rear wall 150 a of the holder, the upper joint 140 c,150 k, the axis of rotation of which extends parallel to the axis ofrotation of the lower joint 171, 171′. The bearing seat 140 c and thejoint head 150 k are held together with the connecting pin 150 n′ whichis connected to the connecting sleeve 140 g.

The four upper locking recesses 141′, 141″, 141′″, 141′″ are arranged onthe outer side of the joint head 150 k and are engaged by the upperlocking cam 41 (FIG. 32), and the two lower locking recesses 142′, 142″are arranged on the joint head 171, and are engaged by the lower lockingcam 42 which can be released by the actuator 44′g (FIG. 32).

Four mirror-symmetrically arranged openings 150 a′ are provided in therear wall 150 a of the holder 150, which enable removal of the tabletcomputer 60 in that, after lifting the holding clamp 151 g, the tabletcomputer can be pressed from the rear out of the holder in any positionof the holder 150 to such an extent that it can be conveniently removed.

Two concave receptacles 150 b′, 150 b″ are provided on the side of theholder 150 opposite to the holding clamp 151 g, into which the tabletcomputer is inserted at an angle and pivoted into the holder 150 untilit is hooked behind the holding clamp 151 g.

The two transfer buttons 158′, 158″ are inserted into the border 151 ofthe holder 150 as illustrated in FIGS. 48, 49 and are covered by anL-shaped cover 151′ across the corners.

FIG. 52 shows the inner structure of the connector element 130 b and ofthe intermediate piece 190 which comprises a pivot bearing 190 a towhich the intermediate piece 190 is connected such that it can berotated with the connector element 130 b, thereby forming the firstjoint 70, and also comprises the joint head 171 which is rotatablyconnected to the bearing seat 171′ of the carrier element 140.

Pivoting arms 130 d′, 130 d″ are arranged like a fork on the connectorelement 130 b and rotatably support the pivot bearing 190 a. The pivotbearing 190 a is widened like a funnel on both sides, wherein lockingteeth 190 a″ are mounted to the inner lateral area of one funnel 190 a′.

A cone-shaped locking ring 190 b is inserted between the funnel 190 a′and the pivoting arm 130 d′, which has locking teeth 190 b′ on the sidefacing the funnel 190 a′.

A pressure spring 190 d is inserted between the locking ring 190 b andthe pivoting arm 130 d′, which pretensions the locking ring 190 bagainst the funnel 190 a′ such that the locking teeth 190 b′ of thelocking ring 190 b engage in the locking teeth 190 a″ of the pivotbearing 190 a, thereby blocking the position between the connectorelement 130 b and the intermediate piece 190 or the carrier arm 140 andthe holder 150.

For releasing the blockage, the push-button 190 c arranged at the endface can be actuated, whereby the locking ring 190 b is pressed viaconnecting rods 190 c′ against the pressure spring 190 d such that theengagement of the locking teeth 190 b′ and the locking teeth 190 a″ isreleased and the intermediate piece 190 with the carrier arm 140 and theholder 150 can freely rotate.

FIG. 53 shows a schematic view of the preferred positions of use of theholder 150 with respect to the connector element 130 b or the firstjoint 70, wherein the screen 160 a of a tablet computer that is insertedinto the holder 150 remains oriented towards the user in all positions.

The symbol A thereby designates the first approximately verticalposition of use substantially above the connector element 130 b or abovethe first joint 70, and B1 to Bn designate the inclined positionsbetween an approximately horizontal and an approximately vertical secondposition of use substantially below the connector element 130 b or belowthe first joint 70. Different inclined positions B2, B3 . . . Bn can beassumed between B1 and Bn.

FIGS. 54 to 56 show a mounting foot by means of which the device can beused on flat surfaces outside of vehicles.

The mounting foot has a T-shape and comprises a receiving space 180 afor the connector element 130 b and two laterally projecting struts 180b′, 180 b″ for supporting the device. The mounting foot 180 isadvantageously produced from an elastic material in order to provide aslight clamping effect with respect to the connector element 130 b andsecure the device from being displaced.

The invention has been described above with reference to severalembodiments of devices, in which each holder for the tablet computer canbe moved at least between a first position of use and a second positionof use by means of a transfer configuration. It is clear that furtherpositions, in particular positions in which the device is held in astowed away position, e.g. in a storage position in a housing, are alsopossible.

The exemplary transfer configurations ensure that the screen side of thetablet computer remains oriented towards the user in each position ofuse and at the same time that the tablet computer can remain in theholder. The transfer configuration advantageously enables overlapping oftwo movements during transfer between the positions of use. The tabletcomputer can moreover be rotated together with the holder about a pivotaxis between an upright format and a transverse format in any positionof use.

By way of example, FIGS. 20 through 22 describe one embodiment forinstallation in a receiving space located on the rear side of a backrest or of a head rest, comprising a transfer configuration incorrespondence with FIG. 6. It is clear that the further describedvariants of transfer configurations can also be installed into acorresponding receiving space.

Extraction means for moving the device out of the receiving space may beprovided so that the device can be guided past the boundaries of thereceiving space without striking against it, where this is required. Theextraction means may e.g. be designed as a joint or linear guidance anddisplace the overall carrier element or at least one end of the carrierelement facing the holder out of the receiving space.

We claim: 1-53. (canceled)
 54. A device for attaching a tablet computerto a rear side of a motor vehicle seat part, to a back rest, a head restor to a head rest mounting of a vehicle seat, the device comprising: afastening device for mounting the device to the vehicle seat part; acarrier element movably connected to said fastening device; a holdermovably connected to said carrier element for receiving the tabletcomputer, said holder being structured for movement between a firstposition of use, in which a screen of the tablet computer is oriented inan approximately vertical direction facing away from the vehicle seatpart and a second position of use, in which the screen of the tabletcomputer can be adjusted to assume an oblique orientation intermediatebetween a substantially horizontal and a substantially verticalposition; a first joint disposed between and connecting said carrierelement to said fastening device, said first joint being structured torotate about a horizontal axis which is parallel to a wide rear side ofthe vehicle seat part; a pivot joint disposed between said carrierelement and said holder, said pivot joint having a rotation axis whichis perpendicular to a wide side of said holder such that said holder canbe rotated between vertical and transverse formats; an intermediatepiece pivotably cooperating with said first joint; and a third jointconnected between said intermediate piece and said carrier element, saidthird joint having an axis extending parallel to an axis of saidrotating joint in such a manner that motion of said holder between saidfirst and said second positions of use takes place in a plane.
 55. Thedevice of claim 54, further comprising locking means or stops disposedand structured to lock said carrier element in at least approximatelyvertical upper and lower orientations thereof.
 56. The device of claim55, wherein an operational release button is provided for releasing saidlocking means.
 57. The device of claim 56, wherein said release buttonis arranged on said carrier element or on said intermediate pieceadjacent to said third joint.
 58. The device of claim 54, wherein saidholder has a rectangular rear wall, end faces of which have lateralsupports for the tablet computer.
 59. The device of claim 58, whereintwo supports arranged on opposite end faces are designed as clamps andextend over the tablet computer when inserted into said holder, whereinat least one of said two clamp-shaped supports is spring-loaded andmoves past a rear wall to an outside for inserting or removing thetablet computer.
 60. The device of claim 54, wherein said carrierelement is connected to said fastening device via a coupling having amanually releasable locking device, said coupling having a receptaclefor accepting a connector element.
 61. The device of claim 60, whereinsaid first joint is arranged between said connector element and saidcarrier element.
 62. The device of claim 60, wherein said fasteningdevice comprises a clamping element which can be clamped between twohead rest columns of a head rest mounting, wherein a locating bushing isarranged approximately in a center of said clamping element.
 63. Thedevice of claim 60, wherein at least one said intermediate piece isdisposed between said fastening device and said holder, saidintermediate piece having two mutually perpendicular pivot axes.
 64. Thedevice of claim 63, wherein said intermediate piece is connected to anend of said carrier element via a joint that is associated with one ofthe two mutually perpendicular pivot axes.
 65. The device of claim 63,wherein said intermediate piece is connected to said connector elementvia said first joint.
 66. The device of claim 63, wherein saidintermediate piece comprises a joint head which is rotatably connectedto a bearing seat of said carrier element.
 67. The device of claim 54,wherein said first joint is provided with a positive-locking lockingdevice which can be released by a push button that is arranged on an endface.
 68. The device of claim 54, wherein said holder is substantiallypositioned above said fastening device in said first position of use andsubstantially positioned below said fastening device in said secondposition of use.
 69. The device of claim 54, wherein stops are providedwhich limit an angle of inclination of said holder with respect to auser at least in said two positions of use in order to avoid endangeringpassengers in case of an accident.
 70. The device of claim 54, whereinsaid pivot joint is arranged at a point of intersection of diagonals ofa broad side of said holder such that said holder remains centered withrespect to the vehicle seat or a mounting position thereof both in saidupright format position and in said transverse format position.
 71. Thedevice of claim 54, wherein said holder has a rim extending about anentire periphery thereof at a height of an edge of the table computer orprojecting past same and having an outward safety radius, said edge ofsaid holder thereby being configured as a double-walled U closed at aside of the screen in order to increase strength and to facilitateintroduction of larger safety radii.
 72. The device of claim 54, whereinopenings are provided in a rear wall of said holder such that the tabletcomputer can be pushed from a rear position out of said holder when aholding clamp has been released.
 73. The device of claim 54, wherein thedevice can be installed in a receiving space that is formed on a rearside of the back rest or a head rest such that the device issubstantially accommodated in a body of the vehicle seat in said firstposition of use and the screen of the tablet computer is approximatelyaligned with an outer side of the vehicle seat part.
 74. The device ofclaim 54, wherein for rotating said holder or the tablet computerbetween said upright format and said transverse format and/or forinserting and removing the tablet computer and for moving said holder orthe tablet computer into said second position of use, the device or saidholder can be moved to a corresponding extent out of the receiving spaceby means of an extracting device, wherein said extracting device isselected from the group consisting of a linear guidance, a pivot jointand an axis of rotation that can be telescopically expanded.